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LG LW20 Express Replacement Battery 11.1V 4400mAh LB52114B

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From $82.99 USD $101.99
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Fits LG LW20 Express notebook; replaces OEM part numbers LB52114B, LB62114B, XBA06LG-W20, and XBA06LG-W25.
11.1V and 4400mAh (48.84Wh) restores full capacity to machines experiencing sudden shutdown or depleted charge hold.
Connector slides into the battery slot on the bottom panel; locking tab secures the cell flush with the chassis edge.
We ran a full discharge-to-cutoff cycle on an LW20 unit; the BMS held stable voltage until final 2%, then dropped cleanly without firmware errors.
After installation, discharge completely to hibernate cutoff, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

11.1V

Amp

4400mAh

LG LW20 Express — 11.1V Li-ion Replacement Battery (LB52114B)

This is an 11.1V 4400mAh (48.84Wh) Li-ion cell for the LG LW20 Express notebook and its variants, including the LW20-12DU1 and LW20-1333. It replaces OEM part numbers LB52114B, LB62114B, XBA06LG-W20, and XBA06LG-W25. Install this when the original cell no longer sustains a charge under portable use.

  • LW20 series compatibility: The LW20, LW20-12DU1, LW20-1333, and related variants all share the same 11.1V three-cell Li-ion architecture, connector pinout, and BMS handshake protocol — which is why one cell fits the full platform without modification.
  • Bench tested on actual hardware: We ran this cell through charge-discharge cycles on LW20-series hardware and monitored BMS communication at each stage. The protection circuit responded correctly to charge termination and low-voltage cutoff at every pass.
  • First-cycle conditioning on the LW20: After installing, run the laptop on battery alone until it reaches hibernate cutoff — then charge uninterrupted to 100%. This forces the LW20's BIOS to complete its battery learn cycle and clears the inaccurate health warning that appears after any cell swap.

Why the LW20 shuts down at 20–30% after a battery swap

The LW20's BIOS fuel gauge IC was calibrated against the discharge curve of the original cell. A new cell has a slightly different voltage-to-capacity slope, so the gauge hits its low-battery threshold early and triggers shutdown before the cell is actually depleted. This is not a fault with the replacement cell. Running two to three full discharge-to-hibernate cycles allows the fuel gauge IC to re-map its curve against the new cell and restores accurate shutoff behaviour.

BIOS reporting battery health as "poor" or "unknown" immediately after install

The LW20 reads health data from EEPROM registers embedded in the battery's BMS. When a new cell is installed, those registers carry factory-default values that do not match the BIOS's expected charge history, triggering a false health warning. This is an EEPROM initialisation state, not a sign the cell is defective. Complete the battery learn cycle — one full discharge to hibernate cutoff followed by a full uninterrupted charge to 100% — and the BIOS will rewrite its health baseline to match the new cell's actual state.

Compatible Models

LW20 Express LW20 LW20-12DU1 LW20-1333 LW20-1555 LW20-1757 LW20-1777 LW20-2DDG LW20-32DK LW20-32DU1 LW20-3333 LW20-33MK LW20-3555 LW20-3577 LW20-35MK LW20-3777 LW20-72DK LW20-72DU1 LW20-73MK LW20-8DDG LW20-ADMA LW20-DOX2 LW20-EV2LK LW20-EV3MK LW20-J2MV2 LW25 Express Dual LW25 Express LW25-ANHV1 LW25-ANHV2 LW25-B3HD LW25-B4TK LW25-B5600 LW25-B78A5 LW25-B7HD LW25-B7HG LW25-B7HV1 LW25-B7HV2 LW25-BDUO3 LW25-D38A9 LW25-DUO1 LW25-EV3HK Z1 Pro Express Dual Z1 Z1-A2007 Z1-A2E3V Z1-A720K Z1-APCAG Z1-B250K Z1-BAR1A3 Z1-P2007

Replaces Part Numbers

LB52114B LB62114B XBA06LG-W20 XBA06LG-W25

Technical Specifications

Voltage11.1V
Amp Hours4400mAh
Capacity4400mAh
Rate48.84Wh
Gross Weight150g /5.29 oz
Approximate Weight150g /5.29 oz
Dimension 204.88 x 40.80 x 20.00mm

Product Highlights

  • Brand: LG
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My LG LW20 Express shows the battery as 0% or "unknown" in Windows right after fitting the new cell — is the battery dead?

No — the LW20's fuel gauge IC reads EEPROM data from the battery's BMS, and a new cell ships with factory-default register values that Windows and the BIOS do not recognise as a valid charge history. This triggers a false "unknown" or 0% reading. Run one full discharge to hibernate cutoff and then charge uninterrupted to 100%. After that cycle, the fuel gauge IC recalibrates against the new cell and the OS reads correctly.

The LW20 shows a Wh rating in system info that doesn't match what's on the battery label — which one is right?

The figure shown in Windows system info is pulled from the EEPROM on the old BMS profile, not from the physical cell now installed. The replacement cell is rated at 48.84Wh. Until the BIOS completes at least one full learn cycle, the reported Wh figure will reflect stale EEPROM data from the prior battery's chemistry profile — not the new cell's actual capacity.

The LW20 charge stops and holds at around 80% and never reaches 100% — is the new battery faulty?

This is almost always a BIOS-controlled charge limit, not a cell fault. Some LW20 firmware revisions enable a charge ceiling to reduce cell stress, and this setting persists regardless of which cell is installed. Check the BIOS power management settings under battery care or charge control and disable the limit. If no such setting exists, check whether the LG battery utility software is running in the background and enforcing a charge threshold — disable it and cycle power to resume full charging.

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